/*      
 * 模块编号  
 * 功能描述 
 * 文件名 PaymentService.java 
 * 作者 王磊 
 * 编写日期 2022年01月18日 
 */
package wl.demo.springcloud.service;

import java.util.concurrent.TimeUnit;

import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;

import cn.hutool.core.util.IdUtil;

@Service
public class PaymentService
{
    /**
     * 正常访问，一切OK
     * @param id
     * @return
     */
    public String paymentInfo_OK(Integer id)
    {
        return "线程池:"+Thread.currentThread().getName()+"paymentInfo_OK,id: "+id+"\t"+"O(∩_∩)O";
    }

    /**
     * 超时访问，演示降级
     * @param id
     * @return
     */
//	@HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler",
//			commandProperties = {
//					@HystrixProperty(
//							name = "execution.isolation.thread.timeoutInMilliseconds",
//							value = "3000")
//			})
    public String paymentInfo_TimeOut(Integer id)
    {
        try { TimeUnit.SECONDS.sleep(5); } catch (InterruptedException e) { e.printStackTrace(); }
        return "线程池:"+Thread.currentThread().getName()+"paymentInfo_TimeOut,id: "+id+"\t"+"O(∩_∩)O，耗费3秒";
    }
	
	public String paymentInfo_TimeOutHandler(Integer id){
		System.out.println("paymentInfo_TimeOutHandler");
        return "/(ㄒoㄒ)/调用支付接口超时或异常：\t"+ "\t当前线程池名字" + Thread.currentThread().getName();
    }
	
	
	//=========服务熔断
	@HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
	        @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),
	        @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"), 
	        @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"),
	        @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"),
	})
	public String paymentCircuitBreaker(@PathVariable("id") Integer id)
	{
	    if(id < 0)
	    {
	        throw new RuntimeException("******id 不能负数");
	    }
	    String serialNumber = IdUtil.simpleUUID();

	    return Thread.currentThread().getName()+"\t"+"调用成功，流水号: " + serialNumber;
	}
	public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id)
	{
	    return "id 不能负数，请稍后再试，/(ㄒoㄒ)/~~   id: " +id;
	}
}
